PatchTheCVECVE-2026-61018: Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
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CRITICAL 9.8REMOTEDOWNGRADE
CVE-2026-61018 is a critical-severity flaw (CVSS 9.8) affecting webcenter sites. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 9.8 (Confidentiality, Inte
Why this priority
- Critical severity
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 58%) |
| CISA exploited list | No |
| Weakness | CWE-284 |
| Published | 2026-08-18 |
| Last modified | 2026-10-22 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
oracle webcenter sites DOWNGRADE
Affected: 12.2.1.4.0 · 14.1.2.0.0
Fixed in: no fixed release known
Safe to downgrade to: a release before 12.2.1.4.0
1. Check installed version
apt-cache policy webcenter-sites || rpm -q webcenter-sites || webcenter-sites --version
2. No fixed release: DOWNGRADE to a release before 12.2.1.4.0 (Debian / Ubuntu)
apt-cache madison webcenter-sites
sudo apt install webcenter-sites=<VERSION_BEFORE_12.2.1.4.0>
sudo apt-mark hold webcenter-sites
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list webcenter-sites
sudo dnf downgrade webcenter-sites-<VERSION_BEFORE_12.2.1.4.0>
sudo dnf versionlock add webcenter-sites
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Exact fixes by distribution
A distro patch exists: prefer upgrading over downgrading.
Fedora 46 · python-fontconfig · FIXED · 0.6.3-1.fc46 · FEDORA-2026-f92ca8b01f · source
sudo dnf upgrade --advisory=FEDORA-2026-f92ca8b01f
Fedora ELN · valgrind · FIXED · 3.28.0-1.eln159 · FEDORA-2026-c593ef1d15 · source
sudo dnf upgrade --advisory=FEDORA-2026-c593ef1d15
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Related CVEs
- CVE-2026-61008 CRITICAL 9.1 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
- CVE-2026-61029 CRITICAL 9.0 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
- CVE-2026-61021 CRITICAL 9.9 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
- CVE-2026-61033 HIGH 8.6 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)
- CVE-2026-61045 HIGH 8.6 DOWNGRADE Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites)